Home / 13,722.80-20,579.22-4,955.36

Finding the Fourth Proportional to 13,722.80, 20,579.22 and 4,955.36

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Solution

The fourth proportional to 13,722.80, 20,579.22 and 4,955.36 is: 7,431.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.80 : 20,579.22 = 4,955.36 : x
  2. Step 2: Convert to fraction form
    13,722.80/20,579.22 = 4,955.36/x
  3. Step 3: Cross multiply
    13,722.80x = 20,579.22 × 4,955.36
  4. Step 4: Simplify right side
    13,722.80x = 101,977,443.62
  5. Step 5: Solve for x
    x = 101,977,443.62/13,722.80
  6. Step 6: Final answer
    x = 7,431.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.